When politicians are waiting for the results in a Primary election, your son is waiting for admission to Harvard, an entrepreneur is waiting the bank’s approval for a financial loan, everyone frets about the outcome over sleepless night.

We have a proverb, “人事を尽くして天命を待つ—Do your best, and wait for God’s will (decision)” for such an occasion.
We also say “果報は寝て待て— “Go to bed early (have a good sleep) and wait for the good news” to the same effect.

I’m curious to know if there are similar English sayings to “Go to bed early and wait for the good news,” meaning “It’s no use to worry about after everything is done. Just leave it to the hands of God.”

P.S.

I happened to find the phrase which I think, is pretty close to “Go to bed early, and wait for good news” in Hillary Rodham Clinton’s remarks in the recent Diane Sawyer’s interview quoted in Maureen Dawd’s article, “When Will Hillary Let It Go?” in today's (June 14) New York Times.
It reads:

She continued: “I am over it, over it. I think I have changed; not worried so much about what other people are thinking.” She vowed to now “say what I know, what I believe, and let the chips fall (where they may).”

You should say either wait**for**** or *await. You should not say wait the good news or waiting the bank's approval.
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DrewJun 14 '14 at 4:47

@Drew. I was under impression that 'wait" can be used as a transitive verb as well as an intransitive verb, and can take an object without 'for.' It seems I was wrong. Thanks for your advice. I corrected accordingly.
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Yoichi Oishi♦Jun 14 '14 at 5:59

It's in God's hands now is something that English speaking people of faith often say in similar situations. I don't know if it counts as an idiom, however. It's more of an actual statement of faith, and as such wouldn't typically be used by people who weren't believers.

(As a comparison, there are also common English expressions like God only knows that are used simply as idioms, without implying any personal religious belief.)

"It's out of my/your/our hands now" is a secular variant
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MaxJun 14 '14 at 22:00

I completely disagree that this is "only for religious people." Totally non-religious people often blaspheme, use idiom containing "God" and so on. Setting that aside, this is a great suggestion.
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Joe BlowJun 15 '14 at 9:00

@JoeBlow As I mentioned in my answer, there are plenty of idioms referencing God that are used freely without implication of religious belief, but, in my experience, this isn't one of them --at least not in the US.
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Chris SunamiJun 16 '14 at 13:06

How now, my lord, why do you keep alone,
Of sorriest fancies your companions making,
Using those thoughts which should indeed have died
With them they think on? Things without all remedy
Should be without regard: what's done, is done.Macbeth Act 3, scene 2, 8–12

While this may have a backward-looking sense similar to "no use crying over spilt milk" (i.e., one must let go of the past), it's often used with a mind to the now-impending consequences. A similar phase would be "the die is cast" (Alea iacta est, uttered upon Caesar's "crossing the Rubicon").

I don't know if these qualify as "proverbs" in the sense of common usage among the population generally, but many Christians are familiar with the following passages that speak to worry/leaving things in God's hands:

Psalm 55:22 (NASB)—Cast your burden upon the LORD and He will
sustain you; He will never allow the righteous to be shaken.

Psalm 56:3 (NASB)—When I am afraid, I will put my trust in You.

Proverbs 3:5-6 (NASB)—Trust in the Lord with all your heart, and do
not lean on your own understanding. In all your ways acknowledge Him,
and He will make your paths straight.

Phillipians 4:6-7 (NIV)—Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.

I won't quote the whole passage, but here are some key excerpts (these are the words of Jesus):

Matthew 6:25-34 (NASB)—Do not worry then, saying, "What will we eat?" or "What will we drink?" or "What will we wear for clothing?" . . . But seek first His kingdom and His righteousness, and all these things will be added to you. So do not worry about tomorrow; for tomorrow will care for itself. Each day has enough trouble of its own. . . .